【摘要】 目的 研究正常人膝关节软骨的MR成像和软骨三 维重建方法，为临床诊治关节软骨病变提供科学依据。 材料与方法 使用Philips 1.0T磁共振成像仪对20例志 愿者行软骨序列扫描，然后进行三维软骨重建。 结果 软骨序列及软骨重建技术可以清晰显示软骨的结构 ，关节软骨在SE序列上显示为3层结构，在SPIR/3D/FFE/T₁ WI上最多显示为4层结构，重建 后的软骨像具有立体直观的效果，并具有良好的空间分辨率。 结论 软骨MR成像和软骨重建能清晰显示膝关节的软骨 结构，可为临床对骨关节病变的诊断和治疗提供帮助。

HAN Hongjie CHEN Kemin DING Xiaolong

    (Department of Radiology, The Affiliated Renji Hospital, Shanghai No.2 Medical U niversity, Shanghai 200001, P.R.China )

【ABSTRACT 】 Objective To study the MR imaging and 3-D reconstruction of articular cartilage of normal human knee, and to provide clini cians with anatomical basis in diagnosing and treating the articular cartilage d iseases. Materials and Methods MR scanning of knee joints was perf ormed in 20 normal volunteers with a 1.0T superconductive MR unit (Philips NT), using cartilage series scan. 3-D reconstruction of the articular cartilage was made. Results The structure of articular cartilage was clearly displayed on MR images using cartilage series scan and reconstruct technology. O n SE sequence images, normal articular cartilage showed three laminae, while a m aximum of four laminae could be demonstrated on SPIR/FFE/T₁ WI images. On the r econstructed images, the cartilage showed stereoscopic effects and pretty good s patial resolution. Conclusion MR imaging and 3-D reconstruction of articula r cartilage can well display the structure of cartilage. It is very helpful in d iagnosing and treating the articular diseases.

    【Key words 】 Articular cartilage MRI Recons truction